With the popularity of LED display, the concept of "light pollution" is mentioned. So the end LED display is not "light pollution"? The international definition of light pollution is usually divided into 3 categories: white pollution, artificial day and color-light pollution. At present, our country only has the relevant stipulation on the glass curtain wall in white pollution, there is no relevant stipulation on artificial daytime and colored light pollution. But considering that the color light pollution does cause people to feel unwell, should belong to "light pollution". The display screen has been designed to consider the problem of light pollution prevention and cure.